Sash lock



A. J. HANKE.

SASH LOCK.

APPLICATION FILED MAR. 5. 19 21.

Patented Aug. 8, 1922..

I N vENToR 4505/ J $0146.

fI TONEY AUGUST J. HANKE, OF ST. LOUIS, MISSOURI.

SASH LOCK.

Specification of Letters Patent. Pgfl gntqgd Aug; 1922 Application filed March 5, 1921. seriaino. 450,075.

To all whom it may concern:

Be it known that 1, AUGUST J. HANKE, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Sash Locks, of which the following is a specification.

My invention has relation to improve ments in window sash locks, and consists in the novel details of construction more fully set forth in the specification and pointed out in the claim. The object of the present invention is to provide a sash lock that may be readily applied to the side rail of a window sash, and when so applied will operate to prevent either the lower sash from being raised or the upper sash from being lowered. A further object is to provide a sash lock that is adapted to lock the respective window sashes in either closed or open position; one that will not be accessible from the outside of the window when attached to the sash; and one that will hold the window sash against movement by wedging action, which action will increase as pressure is applied to either raise or lower the respective sashes. Further and other advantages will be better apparent from a detailed description of the invention in connection with the accompanying drawings in which Figure 1 is a fragmentary perspective view of a pair of window sashes with my invention applied to the lower sash in operative relation. with the upper; Fig. 2 is a plan view of my improved sash lock; and Fig. 3 is a side elevation of the same.

Referring to the drawings S represents the lower window sash and S represent-s the upper window sash, the side rail 1 of the lower sash having mounted on its upper end my improved sash lock L. The sash lock comprises a base plate 2 having a downwardly projecting portion 2 and an uprightportion 3 bent flat upon itself so as to provicle a hinge loop 4, the latter being bifurcated to receive the eye 5 bent from the hinge leaf 6. The hinge leaf 6 is provided with a slotted member 7 extending over the base plate 2. said hinge leaf 6 also being provided with a stop member 8 terminating in prongs 9, 9 extending to a point adjacent to the side rail 1 of the upper sash S. The upright portion 3 after being bent upwardly to form the loop 4 and being bent downwardly again is bent laterally opposite to the plate 2 to form a base 2", said base as Well as the downwardly projecting portion 2 being provided with openings 0 for the reception of screws (not shown) whereby the bracket is secured to the rail 1 of the lower sash. Secured into the plate 2 and extending upwardly through a slot 3 in the member 7 is a stud 10, said stud projecting a short distance above the member 7 when the latter is in a horizontal position, and a nut 11 is passed over the stud 10 and disposed beneath the member 7 so that the latter will bear against said nut when the stop 8 is in operative position. The stop 8, member 7, and eye 5 are integrally formed and may be referred to collectively as the looking plate. The base plates 2, 2 and upright 3 together with the loop 4: are also formed of a single piece of flat metal and may be referred to collectively as the bracket wherein the locking plate is pivotally mounted by means of a pin 12 passing through the loops 4 and eye 5. The nut 11 against which the member 7 of the locking plate bears. and by means of which the member 7 is either raised or lowered as desired, may be referred to as the abutment member for the locking plate.

From the foregoing the operation of my sash lock is obvious. The bracket is firmly secured to the lower sash rail 1, after which the nut 11 is turned in a direction to lower the member 7 of the locking plate (dotted position Fig. 3) thus permitting the stop member 8 to swing upwardly out of engagement and clear of the upper sash rail 1. The respective sashes are now freely operable without interfering with the stopmember 8. However, should it be desired to lock the window sashes in either their closed position or in some open position, the sashes are moved to the position desired, after which the nut 11 is turned so as to raise the member 7. and thereby lower the stop member 8 until prongs 9 thereof engage the upper sash member 1. The sashes are now securely locked in place. for with either an upward movement of the lower sash or a downward movement of the upward sash the prongs 9 will dig into the upper sash rail 1' and securely hold the same against further movement in this direction.

From the foregoing it-is apparent that I have provided a window lock that, while comparatively simple and consisting of but few parts, is effective in looking either window sash in any predetermined position,

said lock being subject to release only from the inside of the Window.

Having described my inventionI claim: In combination With a pair of Window sashes, a sash lock mounted on the lowersash, said lock comprising a bracket bent from a single-piece offlat metal and having a base and an upright'portion with a loop in its upper end, a locking plate carry- 10 ing a stop member terminating in prongs AUGUST J. HANKE. 

